Raymarine i40 Depth Instrument Display, SeaTalk, 12V DC, IPX6

Overview

The Raymarine i40 Depth is a compact digital depth instrument for small powerboats, RIBs, and yachts that need a clear depth readout without taking up much helm space. It shows current depth, minimum depth, and depth alarm information on a high-contrast LCD with large digits and red backlighting for night use.

The display measures 128 mm x 72 mm x 35 mm and runs on 12 V DC systems, with a 10 V DC to 16 V DC operating range. Its IPx6 waterproof rating suits exposed cockpit and console locations where spray and washdown are part of normal use.

The i40 Depth can work as the main display for its own depth transducer or repeat depth data from another SeaTalk instrument setup. It is a practical match for owners who want straightforward depth information for shallow approaches, anchoring, channel work, and general coastal cruising.

Key features

• Large digit LCD readout helps keep depth information easy to check from the helm.
• Red backlighting supports night running and low-light cockpit use.
• Shallow depth, deep depth, shallow anchor, and deep anchor alarms help the skipper monitor changing water depth.
• SeaTalk interface carries power and data for integration with compatible Raymarine instruments and autopilots.
• Built-in depth transducer connection lets the display operate as the host for a connected transducer.
• Can repeat data from another SeaTalk network device when used as part of an existing instrument system.
• Supports surface mounting, with an optional trunnion mount available for installations where a bracketed display is preferred.
• Typical current draw of 35 mA keeps electrical load low on small boat 12 V systems.
• IPx6 waterproof rating supports use at exposed helm stations and cockpit panels.

Variants

The Raymarine i40 Depth range is offered in display-only form and in complete packs with transducer options. The main difference between configurations is whether a transducer is included and which mounting style that transducer uses.

The display specifications remain consistent across the range, including the compact i40 display format, SeaTalk connectivity, 12 V DC supply, and depth instrument functions. The correct configuration depends on whether the boat already has a compatible transducer or needs a new through-hull or transom-mounted installation.

• E70064: Configuration Display Only. This option suits refits where the vessel already has the needed depth transducer setup or where the display is being added as part of a broader SeaTalk instrument system.
• E70142: Configuration Pack With Through Hull Transducers. This pack includes P371 and P7 through-hull transducers, making it the configuration for installations that use a hull-mounted depth sensing arrangement.
• E70143: Configuration Pack With Transom Transducer. This pack includes a P66 transom mount transducer, which fits installations where a transducer is mounted at the transom rather than through the hull.

Compatibility and integration

The i40 Depth connects to SeaTalk for power and data, so it can sit within a compatible Raymarine instrument network rather than working only as a standalone display. It can also communicate with SeaTalkNG systems by using the optional SeaTalk to SeaTalkNG Converter Kit E22158.

This makes the instrument useful for small boats that need a simple depth display now, as well as boats already running Raymarine instruments or autopilot equipment. Before installation, confirm the existing transducer type and network cabling so the selected configuration matches the vessel.

Installation and mounting

The compact 128 mm x 72 mm face size works well on tight dashboards, small consoles, and cockpit panels where a larger multifunction display may not be necessary. Surface mounting keeps the installation clean, while the optional trunnion mount can help when the display needs to sit on top of a console or angled surface.

For transducer packs, mounting choice matters. A through-hull transducer setup is commonly used when a more permanent hull installation is acceptable, while a transom transducer can suit many trailerable and outboard-powered boats where transom access is available.

Use on board

This instrument is most useful on boats where depth is checked often but the helm layout needs to stay simple. It gives quick visual confirmation when entering shallow coves, leaving a ramp, crossing bars, fishing near structure, or setting an anchor with enough water under the keel.

The alarm functions are especially helpful when attention is split between steering, traffic, and navigation. Set the limits to suit the boat’s draft and local conditions, then use the display as a dedicated depth reference alongside charts and normal watchkeeping.